|
[Sponsors] |
August 5, 2011, 19:55 |
Reverse flow
|
#1 |
New Member
Tiago Portolon
Join Date: May 2011
Location: Brazil
Posts: 11
Rep Power: 14 |
Hi everyone,
I'm running a 3D simulation on fluent, where "reverse flow" is occuring. What can be wrong, in the simulation parameters? Thanks in advance Tiago |
|
August 8, 2011, 12:02 |
|
#2 |
New Member
Pavel Staša
Join Date: Apr 2010
Location: Czech Republic
Posts: 9
Rep Power: 16 |
It happens to me too, sometimes. I don´t know where is problem, probably mesh can be wrong, but when reverse flow occures and solution is converged I switch off convergence criteria and I continue in the calculations. Almost always reverse flow disappears.
Look to the results when solution is converged and reverse flow occurs. You will see that outcomes are non sence, results are different from the expected. |
|
August 8, 2011, 12:28 |
|
#3 |
Member
Join Date: Mar 2009
Posts: 85
Rep Power: 17 |
Reverse flow often occurs in pipe or channel flows.
The reasons may vary. But in general, 1. You can try to extend your pipe a little bit more (5-10 diameter). 2. (Optional) assign slip-wall condition to the extended part of the pipe. |
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Reverse Flow | Bharati | FLUENT | 0 | September 14, 2010 01:09 |
Flow simulation in reverse drum mixer | Patel Chirag | CFX | 0 | July 19, 2010 15:05 |
reverse flow | alikami | FLUENT | 1 | June 2, 2010 04:19 |
Reverse flow in the VOF model | yan | FLUENT | 1 | May 26, 2005 09:14 |
reverse flow | Giovanni | FLUENT | 11 | October 15, 2001 03:01 |